For many years Sierra Leone and Liberia have been too dangerous to travel through, bedevilled by a uniquely brutal form of violence from which sprang many of Africa's cruellest contemporary icons - child soldiers, prisoner mutilation, blood diamonds. With their wars officially over, Tim Butcher sets out on a journey across both countries, trekking for 350 miles through remote rainforest and malarial swamps. Just as he followed H M Stanley through the Congo - a journey described in his best seller Blood River - this time he pursues a trail blazed by Graham Greene in 1935 and immortalised in the travel classic Journey Without Maps. Tim walks every blistering inch to gain an extraordinary ground-level view of a troubled and overlooked region.